 Phylum：Myxomycota >> Class： Dictyosteliomycetes >> Order： Dictyosteliales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Dictyostelium macrocephalum | |||
| Author： |
Dictyostelium macrocephalum Hagiwara & Yeh et Chien, Bull. Natn. Sci. Mus. Tokyo, Ser. B, 11: 103-108. 1985. |
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| Description： |
Sorocarps, solitary or gregarious, sometimes clustered, usually branched, sometimes sparsely and irregularly branched, phototropic, sometimes prostrate. Sorophores colorless, sinuous, 0.25-2.25 (-9.0) mm in length, tapering from expanded bases to slightly widened tips, 9-32.5 μm in diam at a level 100 μm above the base, tips clavate, 2.5-12.5 (-15) μm in diam at a level 50 μm below the tip. Sori white, globose, 30-300 (-400) μm in diam. Spores hyaline, ellipsoid, usually 1.57-2.0 times longer than broad, mostly 6.3-8.5 × 3.7-4.8 μm, without polar granules. Pseudoplasmodia with radiate streams, 0.35-10.15 mm in diam, not migrating without stalk formation, producing single or several sorogens. | |||
| Specimens： |
Taiwan, Taipei: Chingmei, Yeh 9; Tauyuan: Takuanshan, alt. 1600 m, Tai 1999-B02. |
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| Habitat： |
In humus and fermentation layer of evergreen broad leaved forest soils. | |||
| Distribution： |
Japan and Taiwan. |
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| References： |
Hagiwara et al. 1985. |
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| Provided： |
Z. Y. Yeh. |
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| Note： |
The species is characterized by a combination of three morphological features. (1) Large sori disproportionate to sorophore length. (2) Comparatively short sorophores tapering from thick bases to thin tips. (3) Large spores. | |||